1 | /* Copyright (C) 2003-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <stdio.h> |
20 | #include <unistd.h> |
21 | #include <sys/time.h> |
22 | #include <time.h> |
23 | |
24 | |
25 | /* Test that nanosleep() does sleep. */ |
26 | static int |
27 | do_test (void) |
28 | { |
29 | /* Current time. */ |
30 | struct timeval tv1; |
31 | (void) gettimeofday (tv: &tv1, NULL); |
32 | |
33 | struct timespec ts; |
34 | ts.tv_sec = 1; |
35 | ts.tv_nsec = 0; |
36 | TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); |
37 | |
38 | /* At least one second must have passed. */ |
39 | struct timeval tv2; |
40 | (void) gettimeofday (tv: &tv2, NULL); |
41 | |
42 | tv2.tv_sec -= tv1.tv_sec; |
43 | tv2.tv_usec -= tv1.tv_usec; |
44 | if (tv2.tv_usec < 0) |
45 | --tv2.tv_sec; |
46 | |
47 | if (tv2.tv_sec < 1) |
48 | { |
49 | puts (s: "nanosleep didn't sleep long enough" ); |
50 | return 1; |
51 | } |
52 | |
53 | return 0; |
54 | } |
55 | |
56 | #define TEST_FUNCTION do_test () |
57 | #include "../test-skeleton.c" |
58 | |